What is the authors purpose by concluding his article with a story？A．To show that though w

What is the authors purpose by concluding his article with a story？

A．To show that though we have made great progress in development we lost our direction in the modern society.

B．To illustrate that we are now in the process of flying a plane with a confused pilot driving it.

C．To prove that neither flying a lost plane nor directing the way of a plane is an easy job.

D．To make sure that everybody is the cause of our world pollution through everybody"s making rapid progress.